Models are constructions made by the players to add characters, decorate and many more uses.
In-game, press "N". you can choose a small, medium or big size. The limit of construction is 10x10x10.
First enter a project, you can open your inventory and place a model you created yourself or which you purchased from the shop. You can edit them by pressing the right mouse button and clicking on the "Edit button".
You can sell your models in the store by pressing "i" in the bottom right-hand corner of the model, go to the "i-con info" option, where you need to give your model a name and description. If you ready, click on sell. Your model will now appear in your shop for sale. You can buy other's models for 10 Gold.